Chore: Update script.test.ts

[Adammatthiesen]

This updates script.test.ts to reflect new meta tag count from Mozilla.

Mozilla.org updated the website being tested from having 12 meta tags to 18. This was verified on 2/18/2024 at 12:55PM PDT

[changeset-bot]

⚠️ No Changeset found

Latest commit: a59ac92

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[natemoo-re]

Thanks, that's great!